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AND thanks to AV's new support site I can almost give away how WITHOUT breaking the NDA!
This was originally a community idea which gained much support and momentum as it was a small fix which made a lot of sense and completely abolished macroing from the game.
This quote is as much as I can possibly tell you without breaking rules.
"Spending Prowess is the only way to improve your attributes, combat, and harvesting skills. Crafting can only be improved by using the skill to successfully craft items."